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Relationship between endometrial thickness and embryo implantation

Catherine McDiarmid-Watt | Tuesday, September 04, 2007 | 0 comments

Relationship between endometrial thickness and embryo implantation, based on 1,294 cycles of in vitro fertilization with transfer of two blastocyst-stage embryos.

OBJECTIVE: To evaluate the relationship between endometrial thickness and clinical outcome of IVF and ET.


SETTING: Private assisted reproductive technology center.

PATIENTS: One thousand two hundred and ninety-four infertility patients.

INTERVENTIONS: IVF and fresh autologous ET of two blastocyst-stage embryos, including at least one good-quality blastocyst.

MAIN OUTCOME MEASURES: Clinical pregnancy rate (PR) and spontaneous abortion rate.

RESULTS: Endometrial thickness was greater in cycles resulting in pregnancy than in cycles not resulting in pregnancy (11.9 vs. 11.3 mm, respectively). Clinical pregnancy rates increased gradually from 53% among patients with a lining of <9> or =16 mm. Multiple logistic regression analysis indicated significant effects of age, embryo quality, and endometrial thickness on both clinical pregnancy rates and live-birth or ongoing pregnancy rates. There was also a marginally significant trend toward decreasing rates of spontaneous pregnancy loss with increasing endometrial thickness.

CONCLUSIONS: Clinical pregnancy and live-birth or ongoing pregnancy rates increase significantly with increasing endometrial thickness, independent of the effects of patient age and embryo quality

Source: http://patient-research.elsevier.com/patientresearch/displayAbs?key=S0015028206017699&referrer=www.google.ca%252Fsearch%253Fhl%253Den%2526q%253D%252522Relationship%252Bbetween%252Bendometrial%252Bthickness%252Band%252Bembryo%252Bimplantation%252522%2526btnG%253DGoogle%252BSearch%2526meta%253D





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Catherine

About Catherine: I am mom to three grown sons, two grandchildren and two rescue dogs. After years of raising my boys as a single mom, I remarried a wonderful man who had never had a child of his own. Unexpectedly, I found myself pregnant at 49!
Sadly we lost that precious baby at 8 weeks, and decided to try again. Five more losses, turned down for donor egg, foster care and adoption due to my age and losses - we have accepted that there will be no more babies in our house.

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